Multiple gas-burner.



E. E. FREDERICK. MULTIPLE GAS 1301mm. APPLICATION FILED D110. 5, 1912.

Patented Oct. 28, 1913.

2 SHEETS-SHEET 1.

QN NN WEN QN m VIA INVENTOFI COLUMBIA PLANDGRAPH Co.,wAsHlNa'r0N. D. c.

E. E. FREDERICK.

MULTIPLE GAS BURNER.

APPLICATION FILED DEC. 5, 1912.

Patented Oct. 28, 1913.

2 SHBETSSHEET 2.

proved multiple men chamber.

40 of the air-sluitter.

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lll llTlll) STATES PATENT @FFTCE.

f; EDWIN E. FREDERICK, 0F ERIDGE'VILLE, IPENNSYLVANIA.

lvrunrrrnn GAS-BURNER.

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Specification of Letters Patent.

To all whom it may concern Be it knownthat I, EDWINE. FREDERICK, citizen of the United States, and residing 111 the borough of Bridgeville, in the county of 5 Allegheny and State of Pennsylvanim have ll [y invention consists in'a new and imgas burner of the Bunsen type.

More particularly, it comprises a plurality ofbunsens inclosed in a common outer easing or tube andreceiving gas from a com Said bunsens are provided with needle-valves operated in unison for adjustment. 1 New and improved means for such coordinate adjustment are provided.

One or more bunsens without needle-valves are alsopreferably provided to act as pilot-. lights, also determining the minimum burner flame for a given gasechamber pressure.

Other novel features of structure and arrangement of-parts will appear from the, following description.

ter partially broken away for thesake ofclearness; Fig. 2 1s a longitudinal section of the same along the line ITH in Fig. 3; Fig. 3 1s a butt-end vlew of the burner with the face plate removed to show the needle operating gears; Fig. 4-. is a detail elevation,

partially in section, of one of the pilot-.

lmnsens; Fig. 5 is a diagrammatic view illustrating convenient meansfor controlling two or more of my burners iirunison, and Fig. 6 is a perspective on reduced. scale with a. threaded inlet port I for the attachment of the gas-supply pipe, not shown. Said chamber A is also provided with an. annular rearwardly extending edge flange 2 and forwardly extending piercedears 3 arranged in annular series adjacent to the edge of chamber A.

a is an annular lip outside of ears B is a casing secured to ears 0 by any convenient means, such as screws 5, the perfo- The portion of easing B adjacent to chamber A is tubular while its outer end is preferably tapered, as. shown. The butt-end of easing B is provided with an annular series of lougitudinal air ports 6 whose capacity is regulated by air-shutter C slidiugrly mount- .edon the tubular portion of easing B. llhe flaring skirt 7 to facilitate the drawing in of air through the parts 6. It is evident that by adjusting the air-shutter C, ports 6 may be closed or their capacity regulated asmay be found desirable.

8 represents nipples screwed in one or more concentric series 111 apertures 1n the .front wall 9. of the chamber A, upon which 31111313165 are mounted the Bunsen tubes D-D.

10. represents the needles which cooperate :withsaid nipples to form a needlewalve for each bunsen .D. The needles 10 extend through and are threadedto mesh with nip ples ll which are screwed into apertures 12 in the butt-wall 13 of the chamber A, glands or packing boxes lbelng provided to insure a gas-fight joint.

a central. gear 16 rigidly mounted on a spindle 17 which is mounted to rotate in the corn tral bore 18 of the chamber A, being held against accidental displacement by any convenient means, as by shoulder 19, and washer and cotter-pin 20. The outer end. of

spindle 17 is provided with convenient means, as handle 21 in Figs. 1 and 2, or sprocket 22 in. Fig. 5, whereby said spindle may be rotated when desired.

. It is evidentthat the rotation of the spindle 17 will advance or retreat the needles 10 in relation to the nipples S and thus regulatev the quantity of gas, admitted to the bunsens D. i The threads of needles 10 and nipples 11 are arranged so that the needles 10, are advanced and retreated together, and thus the needle-valves are adjusted in unison.

23 is a face plate centrally pierced to ac conunodate spindle 17 and removably attached to the edge of flange 2 to protect the gears 15.

lVithin the casing B and adjacent to its longitudinal axis are preferably provided one or more pilot-bunsens l) which are mounted on nipples 24; screwed into aper- Patented Get. 28, 1913.

a licanonfiianeember 5,1912. seriairm. 735,012.

,air-shutterC is preferably provided with a tures in the wall 9 of chamber A. Said nipples are unprovided with needles so that the flame of bunsens D is controlled by the gas-pressure in chamber A which is usually controlled by the valve in the gas-supply pipe, not shown. The tubes of the bunsens D and D are preferably enlarged at their bases and provided with annular series of longitudinally slotted air-ports 25 to form the necessary gas and air mixers. The tubes of the bunsens D and D preferably extend into the tapered portion of the casing B, their flames uniting and merging therein to issue from the end of the casing as a single flame of great volume and intensity. WVherc two or more of my burners are installed adjacent to each other as, for instance in the same furnace, their bunsens may be controlled in unison by any convenient means such as a sprocket-chain 26 meshing with sprockets 22 fixed on the exposed ends of spindles 17 as shown in big. 5. The chain 26 may be actuated by hand or by a thermostat or other automatic device, as may be found desirable. The flames of the pilotbunsens D are controlled by the pressure in chamber A and the pilots may be left burning to provide a minimum burner flame or they may be lighted first to ignite the bunsens D when the needle-valves of the latter are adjusted to admit gas.

The advantages of my improved multiple burner are manifold. Among them may be m ntioned the following. The burner will produce the highest efliciency on high or low pressure, thus giving a greater or less degree of heat, and can be instantly adjusted to any pressure desired. The gas is delivered to each needle-valve without obstructing its flow, so that the quantity and pressure of the gas at each valve is the same. My method of introducing air into the outer casing and into the enlarged mixers of the bunsens insures perfect combustion and the highest eificiency. By means of the sliding air-shutter I may adjust the air in accordance with the gas pressure. My flaring shutter facilitates the entrance of the air and its intimate mixture with the gas and feeds an additional supply of air into the mingled flames of the bunsens. The Bunsen type of burner is recognized as the most efficient and by means of my invention I have applied the same to multiple burners, thus greatly increasing the ehiciency of the latter devices.

Although for the sake of clearness I have minutely described the embodiment of my invention illustrated in the drawings, I do not wish to limit myself thereby but claim broadly 1. In a multiple gas burner, a gas chamber, a casing, a plurality of bunsens mounted in said casing, said bunsens being provided with enlarged air-mixing chambers in their bases, needle valves admitting gas into said mixing chambers from said gas chamber, the stems of said needle valves extending through said chamber and protruding from the front wall thereof, means for admitting air from Without said casing into said mixing chambers, and common rotary means engaging the stems of said needle valves with out said chamber whereby all of said needle valves are adjusted in unison.

2. In a multiple gas burner, 21 common gas chamber body, a plurality of bunsens mounted on the rear Wall of said body, said rear wall being provided with an equal number of tapered ports for the admission of gas to said bunsens, needles controlling said ports and extending through the said gas chamber and protruding from the front wall of said body, .a rotary member, and operative connection between said rotary member and the protruding ends of said needles whereby said needle valves are adjusted in unison by the rotation of said rotary member, and a com mon casing mounted on said body and encircling said bunsens.

8. In a multiple gas burner, a common gas chamber body, a plurality of bunsens mounted on the rear wall of said body, said rear wall being provided with an equal number of tapered ports for the admission of gas to said bunsens, needles controlling said ports and extending through said gas chamber and protruding from the front Wall of said body, a rotary member, and gears on the protruding ends of said needles and intermeshing with said rotary member whereby the rotation of said rotary member adjusts all of said needle valves in unison, and a common casing mounted on said body and encircling said bunsens.

Signed at Pittsburgh, Penna, this 2nd day of December, 1912.

EDIVIN E. FREDERICK. lVitnesses:

E. A. LAWRENCE, J. H. HARRISON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

